Heat dissipating module and projection device

Abstract

The invention provides a heat dissipating module configured to dissipate heat of at least one heating element of a projection device. The heat dissipating module includes a first radiator, a second radiator, a pipe, and at least one fan. The second radiator is disposed opposite to the first radiator. The heating element, the first radiator, and the second radiator are connected to each other through the pipe to form a loop. A working fluid is configured to be filled in the pipe, and the working fluid flows through the first radiator after flowing through the second radiator for heat exchange, and the working fluid flowing into the first radiator flows to the heating element for cyclic heat dissipation after heat exchange again through the first radiator. The fan is configured between the first radiator and the second radiator.

What is claimed is: 
     
       1. A heat dissipating module configured to dissipate heat of at least one heating element of a projection device, wherein the heat dissipating module comprises a first radiator, a second radiator, a pipe, and at least one fan, wherein
 the second radiator is disposed opposite to the first radiator, and the at least one heating element, the first radiator, and the second radiator are connected to each other through the pipe to form a loop, wherein a working fluid is configured to be filled in the pipe, the working fluid flows through the first radiator after flowing through the second radiator for heat exchange, and the working fluid flowing into the first radiator flows to the at least one heating element for cyclic heat dissipation after heat exchange again through the first radiator; 
 the at least one fan is configured between the first radiator and the second radiator; and 
 the first radiator comprises a first air inlet side and a first air outlet side opposite to each other, air flow generated by the at least one fan enters the first radiator from the first air inlet side and exits from the first air outlet side, and a first pressure difference exists between the first air inlet side and the first air outlet side, wherein the second radiator comprises a second air inlet side and a second air outlet side opposite to each other, the air flow generated by the at least one fan enters the second radiator from the second air inlet side and exits from the second air outlet side, a second pressure difference exists between the second air inlet side and the second air outlet side, and the second pressure difference is less than the first pressure difference. 
 
     
     
       2. The heat dissipating module according to  claim 1 , wherein air flow of the at least one fan blows from the first radiator toward the second radiator. 
     
     
       3. The heat dissipating module according to  claim 1 , further comprising:
 a first drive element disposed between the second radiator and the at least one heating element and connected to the pipe. 
 
     
     
       4. The heat dissipating module according to  claim 3 , further comprising:
 an accommodating tank disposed between the second radiator and the first drive element and connected to the pipe to accommodate the working fluid, wherein the working fluid within the accommodating tank circulates in the pipe through the first drive element. 
 
     
     
       5. The heat dissipating module according to  claim 3 , wherein the working fluid comprises a first temperature between the first drive element and the second radiator, the working fluid comprises a second temperature between the second radiator and the first radiator, and the working fluid comprises a third temperature between the first radiator and the at least one heating element, wherein the third temperature is less than the second temperature, and the second temperature is less than the first temperature. 
     
     
       6. The heat dissipating module according to  claim 3 , further comprising:
 a second drive element and an accommodating tank which are disposed between the first radiator and the at least one heating element and connected to the pipe, wherein the accommodating tank accommodates the working fluid, and the working fluid circulates in the pipe through the second drive element. 
 
     
     
       7. The heat dissipating module according to  claim 1 , further comprising:
 at least one heat dissipating plate in contact with the at least one heating element and connected to the pipe, wherein the working fluid flows into the at least one heat dissipating plate to dissipate heat of the at least one heating element. 
 
     
     
       8. A projection device, comprising a casing, a projection lens, at least one heating element, and a heat dissipating module, wherein
 the projection lens is joined with the casing; 
 the at least one heating element is configured in the casing; and 
 the heat dissipating module is configured in the casing, and the heat dissipating module comprises a first radiator, a second radiator, a pipe, and at least one fan, wherein
 the second radiator is disposed opposite to the first radiator, and the at least one heating element, the first radiator, and the second radiator are connected to each other through the pipe to form a loop, wherein a working fluid is configured to be filled in the pipe, the working fluid flows through the first radiator after flowing through the second radiator for heat exchange, and the working fluid flowing into the first radiator flows to the at least one heating element for cyclic heat dissipation after heat exchange again through the first radiator; 
 the at least one fan is configured between the first radiator and the second radiator; and 
 the first radiator comprises a first air inlet side and a first air outlet side opposite to each other, air flow generated by the at least one fan enters the first radiator from the first air inlet side and exits from the first air outlet side, and a first pressure difference exists between the first air inlet side and the first air outlet side, wherein the second radiator comprises a second air inlet side and a second air outlet side opposite to each other, the air flow generated by the at least one fan enters the second radiator from the second air inlet side and exits from the second air outlet side, a second pressure difference exists between the second air inlet side and the second air outlet side, and the second pressure difference is less than the first pressure difference. 
 
 
     
     
       9. The projection device according to  claim 8 , wherein the casing comprises an air inlet, the first radiator of the heat dissipating module is disposed corresponding to the air inlet, and air flow generated by the at least one fan enters into the casing from the air inlet and blows from the first radiator toward the second radiator. 
     
     
       10. The projection device according to  claim 9 , wherein an air flow direction at the air inlet is perpendicular to a projection direction of the projection lens. 
     
     
       11. The projection device according to  claim 10 , wherein the casing further comprises an air outlet, and an air flow direction at the air outlet is parallel to the air flow direction at the air inlet or parallel to the projection direction of the projection lens. 
     
     
       12. The projection device according to  claim 11 , further comprising:
 at least one system fan configured in the casing and disposed corresponding to the air outlet. 
 
     
     
       13. The projection device according to  claim 9 , wherein an air flow direction at the air inlet is parallel to a projection direction of the projection lens. 
     
     
       14. The projection device according to  claim 8 , wherein the heat dissipating module further comprises:
 at least one heat dissipating plate in contact with the at least one heating element and connected to the pipe, wherein the working fluid flows into the at least one heat dissipating plate to dissipate heat of the at least one heating element. 
 
     
     
       15. The projection device according to  claim 8 , wherein the heat dissipating module further comprises:
 a first drive element disposed between the second radiator and the at least one heating element and connected to the pipe. 
 
     
     
       16. The projection device according to  claim 15 , wherein the heat dissipating module further comprises:
 an accommodating tank disposed between the second radiator and the first drive element and connected to the pipe to accommodate the working fluid, wherein the working fluid within the accommodating tank circulates in the pipe through the first drive element. 
 
     
     
       17. The projection device according to  claim 15 , wherein the working fluid comprises a first temperature between the first drive element and the second radiator, the working fluid comprises a second temperature between the second radiator and the first radiator, and the working fluid comprises a third temperature between the first radiator and the at least one heating element, wherein the third temperature is less than the second temperature, and the second temperature is less than the first temperature. 
     
     
       18. The projection device according to  claim 15 , wherein the heat dissipating module further comprises:
 a second drive element and an accommodating tank which are disposed between the first radiator and the at least one heating element and connected to the pipe, wherein the accommodating tank accommodates the working fluid, and the working fluid circulates in the pipe through the second drive element. 
 
     
     
       19. A heat dissipating module configured to dissipate heat of at least one heating element of a projection device, wherein the heat dissipating module comprises a first radiator, a second radiator, a pipe, at least one fan, and a first drive element, wherein
 the second radiator is disposed opposite to the first radiator, and the at least one heating element, the first radiator, and the second radiator are connected to each other through the pipe to form a loop, wherein a working fluid is configured to be filled in the pipe, the working fluid flows through the first radiator after flowing through the second radiator for heat exchange, and the working fluid flowing into the first radiator flows to the at least one heating element for cyclic heat dissipation after heat exchange again through the first radiator; 
 the at least one fan is configured between the first radiator and the second radiator; 
 the first drive element is disposed between the second radiator and the at least one heating element and is connected to the pipe; and 
 the working fluid comprises a first temperature between the first drive element and the second radiator, the working fluid comprises a second temperature between the second radiator and the first radiator, and the working fluid comprises a third temperature between the first radiator and the at least one heating element, wherein the third temperature is less than the second temperature, and the second temperature is less than the first temperature. 
 
     
     
       20. A heat dissipating module configured to dissipate heat of at least one heating element of a projection device, wherein the heat dissipating module comprises a first radiator, a second radiator, a pipe, at least one fan, a first drive element, a second drive element and an accommodating tank, wherein
 the second radiator is disposed opposite to the first radiator, and the at least one heating element, the first radiator, and the second radiator are connected to each other through the pipe to form a loop, wherein a working fluid is configured to be filled in the pipe, the working fluid flows through the first radiator after flowing through the second radiator for heat exchange, and the working fluid flowing into the first radiator flows to the at least one heating element for cyclic heat dissipation after heat exchange again through the first radiator; 
 the at least one fan is configured between the first radiator and the second radiator; 
 the first drive element is disposed between the second radiator and the at least one heating element and is connected to the pipe; and 
 the second drive element and the accommodating tank are disposed between the first radiator and the at least one heating element and are connected to the pipe, wherein the accommodating tank accommodates the working fluid, and the working fluid circulates in the pipe through the second drive element. 
 
     
     
       21. A projection device, comprising a casing, a projection lens, at least one heating element, and a heat dissipating module, wherein
 the projection lens is joined with the casing; 
 the at least one heating element is configured in the casing; and 
 the heat dissipating module is configured in the casing, and the heat dissipating module comprises a first radiator, a second radiator, a pipe, at least one fan, and a first drive element, wherein
 the second radiator is disposed opposite to the first radiator, and the at least one heating element, the first radiator, and the second radiator are connected to each other through the pipe to form a loop, wherein a working fluid is configured to be filled in the pipe, the working fluid flows through the first radiator after flowing through the second radiator for heat exchange, and the working fluid flowing into the first radiator flows to the at least one heating element for cyclic heat dissipation after heat exchange again through the first radiator; and 
 the at least one fan is configured between the first radiator and the second radiator; 
 the first drive element is disposed between the second radiator and the at least one heating element and is connected to the pipe; and 
 the working fluid comprises a first temperature between the first drive element and the second radiator, the working fluid comprises a second temperature between the second radiator and the first radiator, and the working fluid comprises a third temperature between the first radiator and the at least one heating element, wherein the third temperature is less than the second temperature, and the second temperature is less than the first temperature. 
 
 
     
     
       22. A projection device, comprising a casing, a projection lens, at least one heating element, and a heat dissipating module, wherein
 the projection lens is joined with the casing; 
 the at least one heating element is configured in the casing; and 
 the heat dissipating module is configured in the casing, and the heat dissipating module comprises a first radiator, a second radiator, a pipe, and at least one fan, a first drive element, a second drive element and an accommodating tank, wherein
 the second radiator is disposed opposite to the first radiator, and the at least one heating element, the first radiator, and the second radiator are connected to each other through the pipe to form a loop, wherein a working fluid is configured to be filled in the pipe, the working fluid flows through the first radiator after flowing through the second radiator for heat exchange, and the working fluid flowing into the first radiator flows to the at least one heating element for cyclic heat dissipation after heat exchange again through the first radiator; 
 the at least one fan is configured between the first radiator and the second radiator; 
 the first drive element is disposed between the second radiator and the at least one heating element and is connected to the pipe; and 
 the second drive element and the accommodating tank are disposed between the first radiator and the at least one heating element and are connected to the pipe, wherein the accommodating tank accommodates the working fluid, and the working fluid circulates in the pipe through the second drive element.